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Revolutionising wheat: Developing cultivars that maintain their quality in heat and drought

28 April 2023 | Story Leonie Bolleurs | Photo Supplied

UFS PhD student and food scientist Schae-Lee Olckers’ research could contribute to a stable supply of good quality wheat and bread, even in the face of climate change.

Follow your passion in order to find your purpose. This is the mantra of food scientist and University of the Free State (UFS) PhD student Schae-Lee Olckers, whose research is set to improve wheat quality by identifying which types of wheat are better able to tolerate stress, and which proteins are most important for producing high-quality bread.

“By grasping this, it is possible to ensure that we continue to have a stable supply of good quality wheat and bread, even in the face of climate change,” says Olckers, who believes wheat is one of the most important food grains in the human diet, and one of the most important staple cereal crops in the world.

Her PhD study, ‘The influence of abiotic stress on gluten protein and baking quality in bread wheat’, under the supervision of Dr Angie van Biljon and Prof Maryke Labuschagne in the Department of Plant Sciences, and Prof Garry Osthoff in the Department of Microbiology and Biochemistry, is investigating how different levels of heat and drought stress – mostly due to climate change – affect the gluten protein composition of high-yield bread wheat.

Olckers is a food scientist at StartWell Foods (Pty) Ltd, a non-profit organisation that produces high-quality extrusion products for feeding schemes around the country. The products help to eliminate stunted growth among children.

Improving wheat breeding programmes

This research could help us find ways to adapt to climate change and continue to produce high-quality wheat and bread for people around the world. – Schae-Lee Olckers

Her research focuses on examining different types of wheat and investigating how proteins are affected by stressors like heat and drought, to understand how these stressors impact the quality of bread. She uses new proteomic methods to look at the different proteins in the wheat flour, to gain a better appreciation of how gluten proteins react to stress.

In this study Olckers is able to see how the proteins change in the various wheat cultivars, helping us to understand how the different types of wheat perform in baking, and how the proteins affect the final product.

She collaborates with the International Maize and Wheat Improvement Center (CIMMYT) in Mexico, that releases new wheat cultivars for developing countries. Their aim is to develop wheat cultivars that maintain their quality in different environments. To investigate the performance and characteristics of the seeds, both in the field and in the laboratory, CIMMYT did the field trials, quality assessment, and supplied the seeds for high-performance liquid chromatography (HPLC) and proteomics analysis.

Finding ways to adapt to climate change

She believes that understanding how these stressors impact the production of bread-baking quality in wheat will help scientists gain important insights into how climate change affects our food supply.

“Taking into consideration the current and projected intensifying heat and water deficit stresses, it is crucial to improve the understanding of these phenomena in order to implement new breeding strategies for sustainable wheat quality. This research could help us find ways to adapt to climate change and continue to produce high-quality wheat and bread for people around the world,” Olckers says.

News Archive

UFS community proud of Wayde’s hat trick of awards

2015-11-24

The Kovsie athlete Wayde van Niekerk received a hat trick of awards at the SA Sports Awards on Sunday 22 November 2015. He was named Sports Star of the Year, Sportsman of the Year, and was crowned as winner in the People’s Choice category.
Photo: Charl Devenish

Wayde changed the game – Naidoo

For a long time, AB de Villiers and Chad le Clos have dominated fan support in South Africa, but Wayde van Niekerk changed the game.

This was what Kass Naidoo, well-known sports journalist and cricket commentator, tweeted after the Kovsie athlete, Wayde van Niekerk, made a clean sweep at the tenth SA Sports Awards in his home town, Bloemfontein, on Sunday 22 November 2015.

According to Naidoo, the golden boy from the University of the Free State (UFS) is now the hottest property in South Africa, and should be watched during the 2016 Olympic Games in Rio de Janeiro.

Hat trick for Kovsie athlete
Naidoo was one of several celebrities to congratulate Van Niekerk on Twitter after Wayde received a hat trick of awards in the Sand du Plessis Theatre. The 400 m athlete was named Sports Star of the Year, Sportsman of the Year, and was crowned as winner in the People’s Choice category.

Apart from this, a humble Van Niekerk received total prize money of R1,1 million and two luxury Mercedes Benz vehicles - one for Sports Star of the Year and one as People’s Choice winner.

Big names outperformed
What makes his awards even more remarkable is the fact that he has outperformed several big names.
In addition to De Villiers and Le Clos, the tennis player, Kevin Anderson, the swimmer, Cameron van der Burgh, and the athlete, Caroline Wöstmann, were all nominated for Sports Star of the Year.

For the People’s Choice Award, Van Niekerk beat De Villiers, the cyclist, Ashleigh Moolman-Pasio, (who was crowned Sportswoman of the Year), Le Clos, and the wheelchair tennis player, Lucas Sithole. The public voted for this award.

Le Clos was nominated with the mountain biker, Greg Minnaar, for Sportsman of the Year.

Best is yet to come
“I don't think we have seen the best of Wayde. Hopefully that will come in Rio next year, along with a gold medal,” Naidoo tweeted.

The Springbok winger, JP Pietersen, also congratulated Van Niekerk on the social network, saying that he deserved his award as Sportsman of the Year.

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